From Systems in Motion, Infinite Patterns Appear

In December 1977, a revolutionary paper quietly appeared in the Journal d’Analyse Mathématique, a specialty mathematics journal. The author, Hillel Furstenberg, did not claim any thrilling — or even new — results. He’d simply offered a proof of a theorem that another mathematician, Endre Szemerédi, had already proved two years before. Despite that, Furstenberg’s paper left a lasting imprint on…

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